The quest for super-fast charging technology for various devices ranging from smartphones to laptops is still on. Recently Xiaomi unveiled the HyperCharge 200W charging that could be deployed for the Mi 11 Pro, although close industry watchers saw the announcement as a public relations stunt. The view is that we are still a bit far away from 200W charging, despite Xiaomi’s enthusiasm. However, recent reports show that a Chinese firm focusing on charging design, NuVolta Technologies, recently launched its second-generation pump fast-charging chip, called the NU2205, which can output 100W power – an industry high.
The NuVolta NU2205 supports dual-cell 4:2 pump fast-charging for segmented batteries, which Xiaomi is projecting. Therefore, it is possible to have a composite charging capacity of 200W, as reported for Xiaomi’s HyperCharge technology for the Mi 11 Pro. Apparently, Xiaomi’s HyperCharge 200W charger may have been manufactured by NuVolta considering that the startup used the picture of Xiaomi’s Mi 11/11 Pro, which seems to prove the cooperation relationship between the two sides. It is most likely that Xiaomi will be the first Chinese company to unveil the NuVolta-driven fast charging dual-cell technology. It could also be adopted by other OEMs.
Xiaomi had claimed that the HyperCharge could charge a battery from 0% to 100% in about 15 minutes. That is an impressive performance, although it is believed that the numbers bandied around could be misleading. Subsequent reports showed that the actual battery capacity of the Mi 11 Pro used for the demonstration was 4,000 mAh, which is different from the expected 5,000 mAh, and 800 charging cycles were needed for 20% of the battery’s capacity to be depleted.
There have been other efforts even within academia for super-fast charging of devices, from using sound energy to laboratory-based efforts by some researchers in Cambridge University.
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